soil cycle

One of the truly kewl things about this planet: YAEP! All Day, Every Day!
The soil cycle is the path taken by carcasses, turds and dead plants. They decompose by stages, and eventually turn into soil. The soil is eaten by plants, which may be eaten by animals. Then the plants and animals poop and die, the decomposers move in and munch, and the cycle starts again.
A simplistic view, but a cool one.